Double-acting pump



(No Model.)

J FEERICK.

DOUBLE ACTING PUMP.

No. 340,910. Patented Apr. 27, 1886.

Tim 1755525- 6/ 0k @Mz UNITED STATES PATENT OFFICE.

JAMES FEERICK, OF NASHVILLE, TENNESSEE.

DOUBLE-ACTING PUMP.

SPECIFICATION forming part of Letters Patent No. 3&O,9l0, dated April27, 1886.

Application filed March 12, 1856. Serial No. 194,936. (No model.)

To all whom it "may concern.-

Be it known that I, JAMES FEERICK, of Nashville, in the county ofDavidson and State of Tennessee, have invented certain new and usefulImprovements in Double-Acting Pumps; and I do hereby declare thefollowing to be a full, clear, and exact description of the invention,such as will enable others skilled in the art to which it pertains tomake and use it, reference being had to the accompanying drawings, whichform part of this specification.

My invention relates to an improvement in double-acting pumps; and itconsists in the combination of the inclosing case or frame, thecylinder, the piston, the double-acting valves, a chamber located belowthe cylinder, and in connection with which both of the valvesalternately operate, and the Water-passages, as will be more fullydescribed hereinafter.

The object of my invention is tolocate both of the valves at the bottomof the cylinder, so as to produce a double-acting force-pump, in whichthe parts are combined in such a manner as to take up the least possibleamount of room, and thus adapt the pump to be used in driven and boredwells, where a double-acting pump cannot ordinarily be used.

Figure 1 is a vertical section of a pump embodying my invention. Fig. 2is a horizontal section taken through the cylinder just above the topsof the valves. Figs. 8 and 4: are detail views.

A represents the pump, and which is here shown as made in founseparatcand distinct pieces, which are bolted and screwed together in any waythat may be preferred. The cylinder B is placed in the center of theframe-work, and the suction-pipe G and the force-pipe l) are connectedto opposite ends of the frame-work in the usual manner. The water risesthrough the pipe 0, up through the vertical passage D, to the verticallymoving double ended valve F. This passage terminates at the partition G,which extends across between the two valves F and H. Below the lower endof the cylinder, but separated therefrom by the two water-passages D I,is the water-chamber J, which is common to both of the valves F and H,and which communicates with the waoer-passage L. Both of the valves Fand H are double-acting valves, and operate to alternately open andclose against the bottom of the cylinder and the top of thewater-chamber J;

hen the piston l begins to rise in the cylinder B, the water risesthrough the lift-pipe G and passage D and lifts the valve F, so as toopen the bottom of the cylinder and close the top of the chamber J, andthen the water passes directly into the cylinder. At the same time thatthe valve F lifts upward,so as to close the top of the chamber J, thevalve H also lifts upward, from the effect of the suction caused by therising movement of the piston, and closes its port in the bottom of thecylinder. YVhen the piston begins to descend, the valves F and H bothdrop. The one F closes its port in the bottom of the cylinder and opensa corresponding one into the top of the chamber J. The valve H drops, soas to open its port in the bottom of the cylinder, and

closes its port in the top of the water-cham ber J. The suction in thetop of cylinder B, above the piston, then extends through thewater-passage L down into the chamber J, and all of the water thatpasses through the passage D and past valve F into chamber J is drawnthrough the passage L into the top of the cylinder. Asthe pistondescends, the water in its lower portion is forced past the valve H,through the water-passage I, to the delivery-point. The valve H beingclosed upon the top of the water-chamber J during the descent of thepiston, none of the water which is being forced from the cylinder canpass into the chamber J. By the time the piston N has reached the bottomof the cylinder B the upper portion has been filled with water from thechamber J through the passage L. \Vhen this piston again begins to rise,all of the water in the top portion of the cylinder is forced throughthe passage L back into the chamber J and past the valve H, which isclosing the port in the bottom of the cylinder, out into thewater-passage I, and thence to the point of delivery. It will thus beseen that the water-chamber J is common to both of the valves F H, andto all three of the water-passages D I L.

The valves being constructed and arranged to operate as here shown, theyare placed together and made to occupy the least possible space, andthat without in any way enlarging the lower portion of the body of thefratne A, as is generally the case. The consequence is, the frame A isof the same size from end to end, and hence can be made to operate inany bored or driven well into which the pump can be inserted.

Not only a very compact but a cheap, simple, and effective pump isproduced by the construction above shown and described.

Having thus described my invention, I claim- In a double-acting pump,the combination of the piston, the cylinder provided with the twowater-passages I L, the two doubleaeting J AS. FEERIOK.

Vitnesses:

J OHN O. DOYLE, H. BAKER.

